The Oxford Thesaurus An A-Z Dictionary of Synonyms - fog n.

1) mist, haze, smog, vapour, cloud, Colloq pea-souper: Our flight was grounded because of fog. 2) trance, daze, stupor, brown study, confused state; coma: He's in a fog and didn't hear a word you said. --v. 3) dim, obscure, cloud, bedim, becloud, blind, stifle: The purpose of all that verbiage is merely to fog the issue. 4) Usually, befog. bewilder, mystify, perplex, confuse, muddle, puzzle, nonplus: I was completely befogged by the technical language he used. 5) Also, fog up or over. mist over or up, cloud up or over, shroud: My bathroom mirror fogs when I take a hot shower.